chore: import upstream snapshot with attribution

2026-07-13 13:39:25 +08:00
commit db620d33df
5151 changed files with 925932 additions and 0 deletions
@@ -0,0 +1,21 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Linq.Expressions;
+
+namespace Microsoft.Agents.AI.Workflows.UnitTests;
+
+internal sealed class SubstitutionVisitor(ParameterExpression parameter, Expression substitution) : ExpressionVisitor
+{
+    private ParameterExpression Parameter => parameter;
+    private Expression Substitution => substitution;
+
+    protected override Expression VisitParameter(ParameterExpression node)
+    {
+        if (node.Name == this.Parameter.Name)
+        {
+            return this.Substitution;
+        }
+
+        return base.VisitParameter(node);
+    }
+}